This hda will identify edges that are flat, and dissolve them. The default behavior is to only find perfectly flat edges. The max edge angle slider allows a threshold of 'flatness', so edges which are mostly flat can also be dissolved, or the threshold can be set higher to obtain different effects, say artisticly driven decimation.
Allows for specifying a subset of primitives to dissolve flat edges of.
Max Edge Angle
Threshold of 'flatness'. 0 means edges have to be perfectly flat, higher numbers will find more edges and dissolve them.
Points within this angle of being on a straight line are considered inline.
Remove Inline Points
Remove inline points of egdes that got preserved on the silhouette of the input geometry as a result of the dissolving of flat edges step.
Preserve Attribute Boundary
Attributes specified here are used to protect edges that represent boundaries of attribute values. Useful for for example uvs or material assignments.